Question

A bus comes to rest by applying brakes in 10 seconds. Calculate the initial velocity of the bus and distance travelled during the retardation of 4 meter per second square.

Answer 1

u=? u= initial velocity, and v= final velocity
v=0
t= 10 s
a= -4m/s2

v =u+at
0=u+ (–4) 10
u=40m/s

initial velocity is 40m/s